243242451315 has 48 divisors (see below), whose sum is σ = 446796997920. Its totient is φ = 122200834560.

The previous prime is 243242451307. The next prime is 243242451329. The reversal of 243242451315 is 513154242342.

It is a happy number.

243242451315 is a `hidden beast` number, since 243 + 242 + 45 + 131 + 5 = 666.

It is not a de Polignac number, because 243242451315 - 2³ = 243242451307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243242451315.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2219577 + ... + 2326586.

It is an arithmetic number, because the mean of its divisors is an integer number (9308270790).

Almost surely, 2^243242451315 is an apocalyptic number.

243242451315 is a deficient number, since it is larger than the sum of its proper divisors (203554546605).

243242451315 is a wasteful number, since it uses less digits than its factorization.

243242451315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4546244 (or 4546241 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

Adding to 243242451315 its reverse (513154242342), we get a palindrome (756396693657).

The spelling of 243242451315 in words is "two hundred forty-three billion, two hundred forty-two million, four hundred fifty-one thousand, three hundred fifteen".